September 20 - custom location - Weather History and Averages

High Temperatures

On September 20 in this location the average high temperature is 74.4 °F (23.6 °C). The lowest recored high temperature was 55.9 °F (13.3 °C) in 1991 and the highest recored high temperature was 93.6 °F (34.2 °C) in 2018. The high temperature is usually* between 68.6 °F (20.3 °C) and 80.3 °F (26.8 °C). About a quarter of the time, the high temperature is less than 68.6 °F (20.3 °C), and another quarter of the time, the high temperature is greater than and 80.3 °F (26.8 °C). About 95% of the time, the high temperature has been between 57.5 °F (14.2 °C) and 91.3 °F (33.0 °C).

Low Temperatures

On September 20 in this location the average low temperature is 59.1 °F (15.1 °C). The lowest recored low temperature was 40.3 °F (4.6 °C) in 2020 and the lowest recored low temperature was 71.8 °F (22.1 °C) in 2024. The low temperature is usually* between 54.5 °F (12.5 °C) and 63.7 °F (17.6 °C). About a quarter of the time, the low temperature is less than 54.5 °F (12.5 °C), and another quarter of the time, the low temperature is greater than and 63.7 °F (17.6 °C). About 95% of the time, the low temperature has been between 45.8 °F (7.7 °C) and 72.4 °F (22.4 °C).

Frost

On September 20 in this location expect the temperatures to drop below freezing for a risk of frost about 0.0% of the time.

Usually* in this context means around 50% of the time, assuming a normal distribution of values.

Data Source(s)

The data used to compute the average high/low temperatures for this location were taken from the following stations: